linux-kernel - Re: [PATCH v3 4/5] input: synaptics - make image sensors and cr48 sensors report widths

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Date:	Thu, 11 Jun 2015 17:40:14 -0700
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	Gabriele Mazzotta <gabriele.mzt@...il.com>
Cc:	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	rydberg@...math.org, silverhammermba@...il.com,
	peter.hutterer@...-t.net, hdegoede@...hat.com,
	benjamin.tissoires@...il.com, grafi@...fi.jp, oneukum@...e.de
Subject: Re: [PATCH v3 4/5] input: synaptics - make image sensors and cr48
 sensors report widths

HI Gabriele,

On Sun, Mar 22, 2015 at 03:43:55PM +0100, Gabriele Mazzotta wrote:
> The driver was not reporting widths for image sensors and cr48 sensors
> despite it was calculating them.
> 
> Link: https://bugzilla.kernel.org/show_bug.cgi?id=77161
> Signed-off-by: Gabriele Mazzotta <gabriele.mzt@...il.com>
> ---
>  drivers/input/mouse/synaptics.c | 5 ++++-
>  1 file changed, 4 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
> index ff47084..4e86ba6 100644
> --- a/drivers/input/mouse/synaptics.c
> +++ b/drivers/input/mouse/synaptics.c
> @@ -927,6 +927,7 @@ static void synaptics_report_mt_data(struct psmouse *psmouse,
>  		input_report_abs(dev, ABS_MT_POSITION_X, pos[i].x);
>  		input_report_abs(dev, ABS_MT_POSITION_Y, pos[i].y);
>  		input_report_abs(dev, ABS_MT_PRESSURE, hw[i]->z);
> +		input_report_abs(dev, ABS_MT_TOUCH_MAJOR, hw[i]->w);

As I mentioned in the other email ABS_MT_TOUCH_MAJOR should use surface
units for reporting.

>  	}
>  
>  	input_mt_drop_unused(dev);
> @@ -1192,8 +1193,9 @@ static void set_input_params(struct psmouse *psmouse,
>  	if (SYN_CAP_IMAGE_SENSOR(priv->ext_cap_0c)) {
>  		set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
>  					ABS_MT_POSITION_Y);
> -		/* Image sensors can report per-contact pressure */
> +		/* Image sensors can report per-contact pressure and width */
>  		input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
> +		input_set_abs_params(dev, ABS_MT_TOUCH_MAJOR, 4, 15, 0, 0);
>  		input_mt_init_slots(dev, 2, INPUT_MT_POINTER | INPUT_MT_TRACK);
>  		/* Image sensors can signal 4 and 5 finger clicks */
>  		__set_bit(BTN_TOOL_QUADTAP, dev->keybit);
> @@ -1202,6 +1204,7 @@ static void set_input_params(struct psmouse *psmouse,
>  		set_abs_position_params(dev, priv, ABS_MT_POSITION_X,
>  					ABS_MT_POSITION_Y);
>  		input_set_abs_params(dev, ABS_MT_PRESSURE, 0, 255, 0, 0);
> +		input_set_abs_params(dev, ABS_MT_TOUCH_MAJOR, 4, 15, 0, 0);
>  		/*
>  		 * Profile sensor in CR-48 tracks contacts reasonably well,
>  		 * other non-image sensors with AGM use semi-mt.
> -- 
> 2.1.4
> 

Thanks.

-- 
Dmitry
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